2 Answers
2

1) check your hard drive first. copy between harddrive/directory. it should be way above 10MB/s. if this fails on either machine, the hard drive is to blame.

2) then check your network cable. 900KB/sec is near the theoretical speed of 10Mbps lan. that sort of lan cable should not be possible to be bought these days. check if there are 8 lines in the cable. change cable and test again if necessary. the network connection should show a "1 Gbps" speed on the dialog in this case.

3) sometimes reverting the router to the default settings fix a problem or two. sometimes routers needs to be restarted.

It wound up being that the network adaptor on the Vista machine was somehow set to 10 Mbps instead of 1 Gbps or Auto. No idea how that happened, as I never manually changed that.
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ashgromniesJun 9 '10 at 17:50